Jacob c



(No Model.)

J. C. WOLPIEIl BAGKING FOR ELEGTROTYPE OR'STBRBOTYPB sHELLs. No. 447,626. Patented Mar. 3, 1891.

Qa@ y QEQ i A TTOHNEYS mg News suns co44 mofamuu.. wAsHmc'rou u c JACOB O. VOLFE, OF NEV YORK, N. Y.

BACKING FOR ELECTROTYPE OR STEREOTYPE SHELLS.

SPECIFICATION forming part of Letters Patent 110.447,62, dated March 3, 1891. h

` Application filed February 14, 1890. Serial No. 340,423, (No model.)

To all whom it may concern:

Be it known that I, JACOB O. VOLFE, of New York city, in the county and State of York, have invented a new and Improved Backing for Electrotype or Stereotype Shells, of which the following is a full, clear, and exact description.

My invention relates to the backing of electrotype or stereotype shells, and has for its object to accomplish the same in a simple and expeditious manner and to provide a a backing with straight sides and ends and of the least possible weight.

The invention consists in the novel construction and combination of the several parts, as will be hereinafter fully set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming apart of this specilication, in which similar figures of reference indicate corresponding parts in all the views.

Figure 1 is a central vertical section through a shell,its backing, and guide-frame, the same being :illustrated as located in a press. Fig. 2 is a side elevation of the backing and a shell attached thereto. Fig. 3 is a perspective view of the backing. Fig. 4 is a perspective view of the guide-frame. Fig. 5 is a perspective view of a slightly-modified form of backing, and Fig. G is a transverse section of Fig. 5.

rlhe backing 10 is made preferably of metal, and is ordinarily cast or forged in box form, as shown in Fig. 3, the said box comprising end pieces, side pieces, and a top 1l, the bottom being open and the interior of the backing hollow, and the said top 11 is provided with a series of perforations or apertures 12. This form of backing is used when medium or large-sized shells are to be backed but the backing of very narrow and long shells is constructed as shown in Fig. 5, in which the top face 11, instead of being perforated, is provided with. one` or more longitudinal grooves or channels 18, and the under side is recessed longitudinally in order to lighten the block constituting the backing. The grooves or channels 13 in the form of backing shown in Fig. 5 and the apertures or perforations in that form illustrated in Fig. 3 may be properly termed vents.

In connection with the backingand the shell vplaced upon the latter.

14 a guide-frame l5 is employed, which is open at top and bottom and closed at the sides and ends, and the size of the said frame is niadc to correspond with the size of the shell to be backed. I further use in connection with the backing and shell a press of anysuitable or approved construction, one form that may be employed being illustrated in Fig, 1, and consisting of a base 1G, having a smooth straight upper surface, and from the corners of the base rods 17 are upwardly projected, provided near their upper extremities with a flange 1S, and a thumb 19 is screwed upon the upper extremity of each of the rods.

lt will be readily observed that but little, if any, of the cementing material need remain between the smooth surface of the backingandshell,sincethe cementpassingthrough the perforations forms in buttons upon the inner side of the backing and effectually binds the shell to place. Atop plate 2O is also employed, provided with apertures in its corners, through which the threaded portions of the rods extend, and the said th Limb-nuts have a bearing upon this top plate. The distance between the upper face of the base 16 and the upper surface of the flanges 18 corresponds tothe height of a type, with which type the height of the combined backing and shell must correspond.

In operation, to back a shell, the shell 14: is placed face downward Within the guide-frame 15, which guide-frame is located upon the upper surface of the base 16 of the press or other equivalent support. Before the shellis placed in its guide-frame it is heated, and upon the upper face of the shell, which is the under face in use, a fusible metal solder 21 is placed, such as tin-foil, which solder or fusible material is made to cover the entire surface of the shell, and is placed on in sufficient quantitiesto render the combined backing and shell more than type-high when the formeris The backing 10 is also heated,and its grooved or apertured top is brought in contact with the solder or fusible metal upon the shell. its equivalent of the press is then applied to the bottom of the backing, and the said top plate is carried downward under pressure until the shell and its backing are exactly typchigh.

The top plate or v IOO The vents n the top of the backing are provided in order that the surplus celnenting; nlaterial may [ind an escape as the backing 1s evenly and gradually pressed downward. Then cooled, the backing' is removed from the `guide-frame, and the shell will be found to be evenly and firmly cemented thereto. The backing, which, as heretofore stated, is preferably in the nature of a shell and boxlike in form, is provided with perpendicular smooth end and side surfaces.

Having thus described my invention, I claim as new and desire to secure by Letters Patent l. The combination, with an electrotype or 

